This is what tipped me off;
Hello, mysterious wielder of a mustache.
Yes, posted within 2 minutes!
(almost no one replies that fast for an intro thread)
Am I invisible? And me.
There's a high chance that Mustachio is lying, but there's a smaller chance that he's telling the truth. I choose to believe that small chance.
(why would you believe the small chance unless you had evidence to prove it?)